I’ve moved to the Cotswolds in the past year, and about 80% of my flying has moved to AF/KL/LH. Even though LHR is only a 1h30 drive it’s still not worth going there for BA unless flying to the US. The regional options from BHX/BRS going East are second to none.
Feeder flights are well timed and usually full to bursting, so they’re doing something right.